In　order　to　help　readers　grasp　key　information　from　web　pages　within　limited　time,　a　novel　intelligent　user　interface　for　webpage　navigation:　Keyphrase　Navigation　Map　(KNM)　is　proposed　in　this　paper,　which　presents　a　map　to　the　readers,　assisting　them　to　navigate　their　webpage.　First,　the　key　phrases　are　generated　from　the　webpage　and　ranked　by　the　keyphrase　extraction　engine,　then　they　are　clustered　by　keyphrase　relevancy,　and　finally　they　are　shown　on　the　thumbnail　according　to　their　relative　coordinates　in　the　full　page.　The　usability　test　proves　that　the　KNM　which　presents　an　overview　of　the　corresponding　web　page　to　readers　can　really　help　them　to　find　information　they　are　interested　in　effectively.　©　Springer-Verlag　Berlin　Heidelberg　2005.